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Изменения
→Псевдокод
'''for''' <tex>xy \in E</tex>
'''if''' py[y] = -1
py[y] = x px[x] = y
return true
'''else''' if dfs(ppy4w[y]) ppy[y] = x px[x] = y
return true
return false
px[] = -1
py[] = -1
'''while''' (changed)
changed = false
